Flue-stop.



VVILLTAM lELLER, OF MINERAL CTTY, OHTO.

FLUE-STOP.

Application filed February provide a device of this character which canbe easily and quickly placed in position or removed therefrom without inany manner working any 1njury to the flue.

To this end the invention comprises, essentially, a coverlate fittingover the end of the flue, a peculiar y-constructed clamping memberfitting within the flue and held spaced from the cover-plate, and aclamping-bolt passing through the cover-plate and coperating with theclamping member.

For a full description of the invention and the merits thereof and alsoto acquire a knowledge of the details of construction of the means foreffecting the result reference is to be had to the following descriptionand accompanying drawings, in 'which Figure l is a sectional viewshowing the application of the device. Fig. 2 is a plan view of thedevice, and Fig. 3 is a detail perspective view showing the variousparts separated.

Corresponding and like parts are referred to in the followingdescription and indicated in all the views of the drawings by the samereference characters.

The numeral l designates a flue-thimble in which the edges thereof arebent outwardly, so as to form a fiange 2, and 3 is the coverplate, whichpreferably conforms to the shape of the fiue and fits against theflanges 2. This cover-plate 3 is provided at its middle point with anopening 4, throu h which the clamping-bolt 5 is passed. T e inner end ofthe clamping-bolt engages with a nut 6, which is carried by the clampingmember 7 The clamping member is preferably formed out of a piece ofsheet material of a size somewhat larger than the interior of the fiueand provided with a radial cut 8. This piece of sheet material is bentso as to cause the edges of the radial cut S to overlap each other andSpecification of Letters Patent.

21,1906. Serial No. 302,301.

Patented Feb. 12, 1907.

form an approximately conical-shaped clamping member the concave side ofwhich faces the cover-plate.

It will be readily understood that the size and of the base of theclamping member will deof which pend entirely upon the amount theseedges overlap each other and that by expanding the base after theclamping member has been placed within the flue the same will be given asecure engagement therewith.

The inner end of the bolt 5 passes through the opening at the apex ofthe conical-shaped clamping member, and the nut 6 is held in osition atthe apex by means of tongues 9, which are out in the sheet material andbent outwardly. Arms l0 are provided to hold the clamping member spacedfrom the coverplate, and these'arms are preferably formed ofintersecting strips of material having openings at their middle points,through which the clamping-bolt 5 is passed, and having their ends bentoutwardly, so as to engage with the base of the clamping member. It willthus be seen that the arms holdl the base of the Vclamping member afixed distance from the cover-plate and that when the clamping-bolt 5 istightened the clamping member is attened out, so as to throw the edgesthereof into a close engagement with the interior of the flue.

From the foregoing description it will be ap arent that in theapplication of the device the clamping member is simply placed withinthe flue so as to throw the cover-plate against the end thereof and isthen expanded by means of the clamping-bolt.

Having thus described the invention, what is claimed as new is- Thecombination of a flue, a cover-plate fitting over the mouth of the flue,a clamping member spaced from the cover-plate and fitting within theflue, the said clamping member being formed from a piece of sheetmaterial having a radial cut therein and bent to cause the edges of theradial cut to overlap each other and give the clamp'ng member anapproximately conical formation, the hollow side of the clamping memberfacing the coverplate, intersecting strips of material interposedbetween the clamping member and the cover-plate, the intermediateportions of the intersecting strips bearing against the coverplate,while the ends thereof are bent outwardly to form arms which engage withthe base of the clamping member and hold the same a fixed distance fromthe cover-plate, a

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5 terseeting strips and engaging with the before-mentioned nutwherebythe apex of the clamping member can be drawn inwardly toward thecover-plate and. the base of the clamping member expanded and throwninto a close engagement with the flue. ro In testimony whereof I afx mysignature presence of two witnesses.

WILLIAM WELLER. itnesses: J. D. HEINLEIN,

TI-Ios. C. FERRELL.

